September 30th, 2008 by admin

The mandibular occlusion rim is removed and a dot placed on the crest of the residual ridge in the canine and the retromolar pad areas
A straight-edge is laid over the dots on each side and a mark is placed on the land area of the crest, interiorly and posteriorly
The mandibular occlusion rim is placed
A straight edge used to connect the two marls on the land area and a line indicating the crest of the ridge is scribed on the occlusion rim

A portion of wax is removed, the wax softened and the maxillary first premolar is placed in position
The facial surface of the maxillary first premolar is on the occlusal plane and the lingual cusp is raised off the plane approximately 0,5 mm
The lingual cusp is over the line on the occlusion rim which represents the crest of the mandibular ridge
The facial and lingual cusps of the maxillary second premolar touch the occlusal plane
The lingual cusp is over the crest of the ridge
Only the mesiolingual cusp of the maxillary first molar touches the occlusal plane and the lingual cusps are over the crest of the mandibular ridge

No cusp of the maxillary second molar touches the occlusal plane.
The facial cusps of the maxillary teeth form a gentle curve, while the lingual cusps form a similar curve aboutt 0,5 mm below the facial cusp
Mandibular first molar, mandibular second molar are set in centric occlusion
The placement of the mandibular posterior teeth determines how will the teeth occlude.
In centric occlusion, the facial cusps of the mandibular teeth contact the central fossae of the maxillary teeth while the lingual cusps of the maxillary teeth fit into he central fossae of the mandibular teeth.
The facial cusps of the maxillary teeth extend beyond the facial surfaces of the mandibular teeth. This facial overlap prevents cheek-biting when the dentures are completed